from PIL import Image, ImageDraw, ImageFont, ImageFilter
import random




def check_code(width=120, height=30, char_length=5, font_file='Monaco.ttf',
               font_size=28):
    code = []
    img = Image.new(mode='RGB', size=(120, 30), color=(250, 235, 5))
    draw = ImageDraw.Draw(img, mode='RGB')

    def rndChar():
        """随机生成字母"""
        return chr(random.randint(65, 90))

    def rndColor():
        """随机生成颜色"""

        return (random.randint(0, 255), random.randint(10, 255),
                random.randint(64, 255))

    font = ImageFont.truetype(font_file, font_size)
    for i in range(char_length):
        char = rndChar()
        code.append(char)
        h = random.randint(0, 4)
        draw.text([i * width / char_length, h], char, font=font,
                  fill=rndColor())

    for i in range(40):
        draw.point([random.randint(0, width), random.randint(0, height)],
                   fill=rndColor())

    for i in range(5):
        x1 = random.randint(0, width)
        y1 = random.randint(0, height)
        x2 = random.randint(0, width)
        y2 = random.randint(0, height)
        draw.line((x1, y1, x2, y2), fill=rndColor())

    img = img.filter(ImageFilter.EDGE_ENHANCE_MORE)
    return img, ''.join(code)


if __name__ == '__main__':
    img, code = check_code()
    # print(code)
    # 将图片写入本地文件里
    # with open('code.png', 'wb') as f:
    #     img.save(f, format='png')
    # 将图片内容写入到内存 stream
    # from io import BinaryIO
    # stream = BinaryIO()
    # img.save(stream, 'png')
    #
    # s = stream.getvalue()
